Saw-set.



Patenied July I7, 1900.

SAW SET.

6. MODONNER.

k a I 2 W 00 J yiv m I Mjom r (Application filed. Feb. 24, 1900.)

(No Model.)

OHARLEY MCDONNER, OF WAUSAUKEE, l/VISCONSIN.

SAW-S ET.

SPECIFICATION forming part of Letters Patent No. 653,690, dated July 17,1900. Application filed Febr ary 24, 1900. Serial No. 6,367. (No model.)

To all whom it may concern:

Be it known that I, CHARLEY MCDONNER, a citizen of the UnitedStates,residing at VVausaukee, in the county of Marinette and State ofWisconsin, have invented a new and useful Saw-Set, of which thefollowing is a specification.

This invention relates to improvements in saw-sets; and one object is toprovide an efficient device of this character by means of which theteeth of a saw may be easily and quickly set with exactness.

A further object is to provide a saw-set which can be used on differentstyles of saws, provision being made for changing the angle of the setto suit the saw to be operated upon.

Other objects and advantages will appear in the following specificationand drawings which accompany the same and forms a part thereof, and inWhich- Figure l is a perspective view of a saw-set constructed inaccordance with theinvention. Fig. 2 is a longitudinal vertical sectionof the same. Fig. 3 is an end view. Fig. iis a vertical cross-section onthe line X X of Fig. 2. Figs. 5 and (flare modifications showingdifferent shapes of punches and dies that may be used.

Similar reference-mumerals refer to similar parts throughout the severalfigures of the drawings.

The saw-set frame comprises two membersa base or anvil block 10, towhich is secured an overhanging supporting block or bracket 11. The baseis a rectangular block, one end of which is provided with a socket 12.An anvil-die 13 is removably fitted in the socket 12 and is held inplace by a thumbscrew 14:, which passes through an opening in the sameand screws imo the edge of the base. The upper face 15 of the anvil-die13 is beveled at the angle at which the teeth of the saw are to be set.The su pporting-bracket 11 is arranged directly over the base-block l0and carries a settingpuuch 16. This bracket 11 is adjustably secured tothe base 10 at one end by means of two bolts 17. The heads of thesebolts are arranged in a recess 18 in the under face of the anvil-blockand pass up through the same and through the slots 18" in the bracket11. A bearing-plate 19, arranged over the slots, has openings whichreceive the bolts 17, and the nuts 20 when screwed tightly down upon theplate 19 firmly clamp the two members together. The upper member orbracket 11 has a cut-away portion 21 on its under side which, forms areceiving-slot between the bracket and the flat upper side of the basefor the reception of the blade of a saw. The edge 22 of such cut-awayportion forms an abutment or stop for the back edge of the saw when inposition to be operated upon.

The setting-punch 16 is slidaloly mounted in a vertical opening inthefront end of the overhanging bracket 11, directly over the anvil-die13. It is cylindrical in form and has a feather 22, which slides in theoffset groove 22", arranged at one side of the opening, thus forming aguide for the punch and preventing its turning. The lower face of thepunch is beveled to cooperate with the beveled face of the anvil-die'18.The punch is normally held in a raised position by means of a flatspring 23, one end of which is removably fastened to the upper face ofthe bracket 11, the other end fitting in a slot 2% in the punch. Afulcrum 25 is provided upon the face of the bracket between the ends ofthe spring.

To clamp the saw in position, and thereby prevent any accidentaldisplacement while it is being operated upon, a set-screw 26 is providedin the bracket 11 intermediate its ends. This is arranged in a verticalposition and when screwed down securely clamps the base of the saw tothe base member 10.

In operation the bracket is suitably adj usted to the base member, andthe saw-blade is clamped in the holdingslot by means of the set-screw26, with the tooth to be, operated upon directly between the anvil-dieand the setting-die. The setting-die is then struck with a hammer orsimilar instrument, and the tooth will be bent to conform to the angleof the coacting dies.

When it is desired to take the set out of the saw, a flat punch and dieare used, as shown in Fig. 5, or if a greater angle is desired the punchand die shown in Fig. 6 are used, the several dies beingeasilyinterchangeable, as it is only necessary to unscrewthe'thuthbscrew 14., whereupon the lower or anvil die may be removed andreplaced, and by removing the fiat spring the setting-punch may be 3Lceased removed. Other shaped dies than those shown may be used withequal advantage for other styles of saws, thereby making the device agreat improvement in the art.

Another advantage lies in the fact that the supporting-bracket isadjustably mounted upon the base member, so that the settingpunch may beadjusted to the lower die in order that they may be registeredperfectly.

It is to be understood that the invention is not to be limited to theexact construction shown, as changes in the form, size, and proportionmay be resorted to Without departing from or sacrificing any of theadvantages of the invention.

Having now fully described the invention, What is claimed as new, anddesired to be secured by Letters Patent, is

1. In a saw-set,the combination with a base having a die, of aninflexible supportingbracket rigidly mounted upon the base and having acut-away portion on its under side which forms a saw-holding slot, asettingpunch coacting with the base-die, and means for clamping a saw inthe saw-holding slot, substantially as described.

2. In a saw-set, the combination with a base having a die, of aninflexible supportingbracket rigidly mounted upon the base and having acut-away portion on its under side which forms a saw-holding slot, asetting punch carried by the siipporting-bracket and coacting with thebase-die, and means also carried by the bracket for clamping a saw inthe saw-holding slot, substantially as de scribed. v

3. In a saw-set, the combination with a base having a socket, of a diedetachably secured in said socket, a supporting-bracket having a cutawayportion on its under side forming a saw-holding slot, saidsupporting-bracket being adjustably secured to the base,aspringsupportedsliding setting-punch carried by the supporting-bracket and coactingwith the base-die, and a set-screw arranged upon the supporting-bracketand adapted to clamp a saw-blade placed between the base and thesupporting bracket, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

CHARLEY MCDONN ER.

Witnesses:

CEOELIA LONDO, SAMUEL DICKESON.

